Most Expensive Home for Sale -- Just for fun!

Ever been curious as to what the most expensive home on the market might be? Well, after reading an article in the Seattle Times entitled "The New Luxury in Real Estate", I became curious myself.
The most expensive single family home currently listed in the MLS is this beautiful waterfront home on Mercer Island for a mere $40 million! It's listed with Wendy Lister of Coldwell Banker Bain and has almost 23,000 sqft, with multiple pools (indoor and out), and an elevator!
Anyone know what the monthly mortgage payments are on $40 mil? :-)